Go for broke.

Anna stands awkwardly for a moment before finally breaking the silence. "Well," she says, "if everything's cool, I guess I'll go to bed." Her petite body, accentuated by her tight fitting tank top and thin pajama bottoms, is irresistible in the dim light.

"Actually," you say with a wicked grin, "why don't you sleep with me tonight?" It's less than innocuous, but not deplorable.

"Sounds good to me!" She exclaims. You're pleasantly surprised, but maybe she just thinks you're joking and is playing along. Time to go for broke - at worst, you can play it off as a gag.

"While you're at it," you shrug, "I know it's pretty hot in here. Especially if we're going to be sleeping in the same bed." Anna begins to nod along, recognizing your newfound wisdom. "You'll probably want to take off your clothes so you're more comfortable."

Anna blinks for a moment, and you begin to feel the blood drain from your face. You begin to wonder how you'll ever play this off - when Anna pulls her shirt off and jumps onto the bed.

She begins to strip off her pajama bottoms as you stand mouth agape, staring at her small but perky breasts and round butt. She looks up at you and laughs.

"Well? It's late, let's get some sleep. Take your clothes off, mister!"

You're still staring at her, examining every inch of her flawless body.

"C'mon, like you were saying, it's hot in here. I bet you're miserable in your pajamas. Now get in bed!"